Electric shaver

Abstract

The invention belongs to the field of shavers, and particularly relates to an electric shaver. Comprising a reciprocating driving device which is provided with a driving shell, a tool bit device which is installed on the reciprocating driving device and works under the driving of the reciprocating driving device, a tool bit base which is detachably installed on the driving shell, at least one tool set which is movably arranged on the tool bit base, and a lifting roller which is installed on the tool set or between the two tool sets, the lifting roller comprises at least two convex parts distributed in the axial direction, and a concave part is formed between every two adjacent convex parts. Due to the fact that the lifting roller comprises at least two protruding parts, and every two adjacent protruding parts are connected through the corresponding concave part, when a user uses the shaver, the lifting roller can make contact with the face and roll on the skin in the process that the shaver head rolls along the face contour, and friction resistance of the shaver set in the rolling process is reduced; meanwhile, the skin is lifted under the action of the convex parts and the concave parts, the massage function is achieved, and the skin is relaxed.

Description

Technical Field

[0001] The invention belongs to the field of shavers, in particular to an electric shaver. Background Art

[0002] Traditional razors are mainly divided into manual razors and electric razors. Compared with manual razors, electric razors are powered by electricity, which is more labor-saving and has a better cleaning effect. Therefore, electric razors are more popular at present. Existing electric razors have a single function, which is only a shaving function, and the blade assembly is mostly provided with at least two relatively rotating blades or a blade and a blade net. When in use, the blade assembly of the electric razor rolls along the face, and the blades of the two blades rub against each other or the blade edges of the blades rub against the surface of the blade net, thereby cutting off the beard and achieving shaving.

[0003] The invention patent with the patent number CN201610082981.8 discloses an electric shaver, whose head has a blade unit, a head shell and a rotating member, the blade unit has an outer blade and an inner blade, the outer blade can contact the target part, the inner blade is arranged corresponding to the outer blade, and is configured to reciprocate relative to the outer blade; the rotating member is supported on the head shell in a rotatable manner; the blade unit and the rotating member are connected in a manner that they can move together relative to the head shell along the height direction of the head shell. Therefore, the rotating member can make the head of the electric shaver move smoothly on the skin.

[0004] With the continuous development of technology, the functions of shavers are becoming more and more mature. How to maximize the value of existing single-function rotating components is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The object of the present invention is to provide an electric shaver which can not only achieve smooth shaving but also lift the face.

[0006] The object of the present invention is achieved in that:

[0007] The present invention proposes an electric shaver having the following characteristics, including: a reciprocating drive device having a drive housing, a cutter head device installed on the reciprocating drive device and working under the drive of the reciprocating drive device, and having: a cutter head base detachably installed on the drive housing, at least one cutter group movably arranged on the cutter head base, and a lifting roller installed on the cutter group or between two cutter groups, the lifting roller containing at least two convex portions distributed along the axial direction, a concave portion formed between two adjacent convex portions, when the lifting roller rolls on the skin, the skin is lifted, tightened and stretched under the action of the convex portions and the concave portions, which is more conducive to the cutting of the beard and the relaxation of the skin.

[0008] The electric shaver proposed in the present invention may also have the following characteristics: the lifting roller comprises: a roller body, provided with convex portions and concave portions distributed along the axial direction; and a roller mounting end, located at the end of the roller body, for mounting the roller body on a knife group or between two knife groups.

[0009] The electric shaver proposed in the present invention may also have the following characteristics: each protrusion has at least one abutting section located in the middle and lifting sections located on both sides of the abutting section; the outer diameter of the lifting section decreases as the distance from the abutting section increases; and a recess is formed between the two lifting sections on opposite sides of two adjacent protrusions.

[0010] The electric shaver proposed in the present invention may also have the following characteristics: the convex portion is a shuttle-shaped rotating body structure whose outer diameter gradually decreases from the middle to both sides; or the convex portion includes a plurality of flanges, the outer diameters of which gradually decrease from the flange located in the middle to both sides, and two adjacent flanges are connected by a concave edge transition.

[0011] The electric shaver proposed by the present invention may also have the following characteristics: the blade group comprises: a stationary blade assembly, including a stationary blade holder and a stationary blade arranged on the stationary blade holder, and a movable blade assembly, including a movable blade seat and a movable blade fixed on the movable blade seat; the stationary blade holder is movably arranged on the blade head base, and the movable blade is movably arranged inside the stationary blade.

[0012] The electric shaver provided by the present invention may also have the following characteristics: the roller mounting end is mounted on the static blade holder and is located on one side of the static blade; the static blade holder protrudes toward one side and is provided with a roller mounting hole for inserting the roller mounting end.

[0013] The electric shaver provided by the present invention may also have the following characteristics: there are two blade groups, namely a first blade group and a second blade group, and the roller mounting end is mounted between the static blade holders of the first blade group and the second blade group through a lifting wheel seat.

[0014] The electric shaver provided by the present invention may also have the following characteristics: the lifting wheel seat comprises: a guide mounting portion connected to the static blade holders of the first blade group and the second blade group, and a roller mounting portion connected to the roller mounting end.

[0015] The electric shaver proposed in the present invention may also have the following characteristics: a connecting head is provided on the side of the stationary blade holder away from the stationary blade, and a mounting hole is provided on the guide mounting portion corresponding to the connecting head; a mounting column is formed by extending the roller mounting portion toward the side of the pulling roller, and the mounting column is provided with a mounting shaft hole along the axial direction for inserting the roller mounting end.

[0016] The electric shaver proposed in the present invention may also have the following features: an inwardly recessed abutment platform is provided on the edge of the mounting hole, the connecting head has a straight opening and an abutment boss for abutting against the abutment platform, and one side of the abutment boss has an inclined guide surface; or, the connecting head is cylindrical, extends into the mounting hole, and a fixing pin is inserted into the connecting head to fix the stationary blade holder and the guide mounting portion together.

[0017] The electric shaver proposed in the present invention may also have the following characteristics: a connecting hole is provided on the side of the stationary blade holder away from the stationary blade, and a mounting hole is provided on the guide mounting portion corresponding to the connecting hole, and a fixing pin is passed through the mounting hole and inserted into the connecting hole to fix the stationary blade holder and the guide mounting portion together; a mounting column is formed on the roller mounting portion extending toward one side of the pulling roller, and the mounting column is provided with a mounting shaft hole along the axial direction for inserting the roller mounting end.

[0018] The electric shaver proposed by the present invention may also have the following characteristics: the reciprocating drive device further comprises: a driving body, which is installed in the driving housing and contains at least one driving member for connecting to the corresponding moving blade holder, and the driving body drives the moving blade holder to reciprocate through the driving member.

[0019] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0020] The electric shaver proposed by the present invention has a lifting roller on the blade head, and the lifting roller contains at least two convex parts, and two adjacent convex parts are connected by a concave part, so that when the user uses the shaver, when the blade head rolls along the facial contour, the lifting roller will also contact the face and roll on the skin, reducing the friction resistance of the blade group during the rolling process. After the convex part of the lifting roller contacts the skin, it will press and stretch the skin, and the skin in the concave part between the two adjacent convex parts will also have a squeezing and lifting effect, realizing a massage function and relaxing the skin; at the same time, the stretched skin will make it easier to spread the beard, making it easier for the blade group to cut the beard, improving the beard and improving the cleanliness of the shaving, reducing the risk of allergies, and at the same time, the skin can also achieve the purpose of wrinkle resistance and firmness after being stretched. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the electric shaver according to embodiment 1 of the present invention.

[0022] Figure 2 This is one of the structural schematic diagrams of the pulling roller in Example 1 of the present invention.

[0023] Figure 3 It is a schematic diagram of the installation structure of the pulling roller in Example 1 of the present invention.

[0024] Figure 4It is an exploded view of the installation structure of the pulling roller in Example 1 of the present invention.

[0025] Figure 5 It is a schematic diagram of the installation structure of the knife group in embodiment 1 of the present invention.

[0026] Figure 6 This is the second structural schematic diagram of the pulling roller in Example 1 of the present invention.

[0027] Figure 7 It is a cross-sectional view of the installation structure of the guide part of the present invention.

[0028] Figure 8 It is a structural exploded view of the static knife assembly of the first knife group of the present invention.

[0029] Fig. 9 It is a schematic diagram of the installation structure of the static tool holder of the first tool group of the present invention.

[0030] Fig.10 It is a cross-sectional view of the installation structure of the movable knife seat of the first knife group of the present invention.

[0031] Fig.11 It is a schematic diagram of the bottom structure of the movable knife mounting portion of the first knife group of the present invention.

[0032] Fig.12 It is a structural schematic diagram of the first knife assembly installation frame of the present invention.

[0033] Fig.13 It is a structural schematic diagram of the first knife assembly mounting plate of the present invention.

[0034] Fig.14 It is a structural schematic diagram of the movable knife assembly of the second knife group of the present invention.

[0035] Fig.15 It is a structural exploded view of the knife set of the present invention.

[0036] Fig.16 It is a schematic structural diagram of the third knife group of the present invention.

[0037] Fig.17 It is a structural exploded view of the third knife group of the present invention.

[0038] Fig.18 It is an exploded view of the installation structure of the reciprocating drive device and the movable knife seat of the present invention.

[0039] Fig.19 It is a schematic diagram of the knife assembly installation structure of embodiment 2 of the present invention.

[0040] Fig. 20 It is an exploded view of the installation structure of the lifting roller seat in embodiment 2 of the present invention.

[0041] Fig.21 It is a schematic structural diagram of the pulling roller of Example 3 of the present invention.

[0042] Meanings of the numbers in the figure: reciprocating drive device 1, drive housing 11, cutter head device 2, cutter head base 21, guide groove 211, blocking edge 2111, limit blocking edge 212, cutter head cover 23, cutter group 3, first cutter group 3a, second cutter group 3b, third cutter group 3c, fourth cutter group 3d, fifth cutter group 3e, static cutter holder 31, first static cutter holder 31a, second static cutter holder 31b, guide portion 310, guide strip 3101, limit stop block 3102, roller mounting hole 311, connector 312, abutment boss 3121, inclined guide surface 3122, I-shaped opening 3123, static cutter fixing portion 313, connecting plate 3131, support platform 3132, buckle structure 3133, accommodating space 314, movable cutter mounting portion 315, lower spring mounting seat 3151, mounting frame 316, installation area 3160, horizontal clamping edge 3161, upper limit groove 31611, lower limit groove 31612, limit tip 31613, longitudinal clamping edge 3162, installation plate 317, lower spring seat 3171, upper limit buckle edge 3172, lower limit buckle edge 3173, limit notch 3174, limit convex edge 3175, static blade 32, movable blade seat 33, upper spring seat 331, upper spring mounting seat 333, movable blade 34, movable blade spring 35, guide spring 36, supporting spring 37, movable blade spring 38, lifting roller 4, roller body 40, convex portion 41, flange 411, concave edge 412, concave portion 42, roller mounting end 43, lifting wheel seat 44, guide mounting portion 441, roller mounting portion 442, mounting hole 443, abutment platform 4431, mounting column 444. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with specific embodiments:

[0044] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of the embodiments of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "before" and "after" quoted in the embodiments of this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0045] When an element is referred to as being “connected,” “disposed,” or “mounted” to another element, it may be directly connected to the other element or may be indirectly connected, disposed, or mounted to the other element via an intervening element.

[0046] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] Embodiment 1:

[0048] The present embodiment provides an electric shaver, in particular, an electric shaver capable of lifting and massaging the face, the electric shaver comprises a reciprocating drive device 1 and a cutter head device 2, the reciprocating drive device 1 has a drive housing 11 disposed outside, a drive module for driving the cutter head device 2 to work and a power module for supplying power to the drive module are arranged inside the drive housing 11. The cutter head device 2 is detachably mounted on the reciprocating drive device 1 and works under the drive of the reciprocating drive device 1.

[0049] like Figure 1 As shown, the cutter head device 2 comprises a cutter head base 21, at least one cutter group 3 and a lifting roller 4. The cutter head base 21 is detachably mounted on the drive housing 11, and a cutter head cover 23 matching the drive housing 11 is disposed outside the cutter head base 21. The cutter group 3 is movably disposed on the cutter head base 21, and the lifting roller 4 is mounted on the cutter group 3. Figure 2 As shown, the lifting roller 4 has a roller body 40 and a roller mounting end 43, the roller body 40 is provided with at least two convex parts 41 distributed along the axial direction, and two adjacent convex parts 41 are connected by a concave part 42; the roller mounting end 43 is located at two ends of the roller body 40 along the length direction, and is used to mount the roller body 40 on the knife group 3. When the lifting roller 4 rolls on the skin, the skin is lifted under the action of the convex part 41 and the concave part 42.

[0050] In this embodiment, if Figure 2As shown in (a), there are two convex parts 41 and one concave part 42, and the concave part 42 is located between two adjacent convex parts 41. In the process of contacting with the face, the most protruding part in the middle of the convex part 41 forms a contact section 413 for pressing the skin, and the two sides of the contact section 413 form a lifting section 414 for squeezing the facial skin. The lifting sections 414 on the opposite sides of the two convex parts 41 are connected by a smooth transition to form the concave part 42. The diameter of the lifting sections 414 on both sides of the contact section 413 decreases as the distance from the contact section increases, that is, the entire convex part 41 is a shuttle-shaped rotating body structure with an outer diameter gradually decreasing from the middle to both sides. The surface of the convex part 41 of this structure is smooth. When contacting with the skin, on the one hand, it can reduce friction and be more convenient to cooperate with the knife group for shaving; on the other hand, it can stretch the skin more smoothly, so that the skin contacting the convex part 41 is sunken and stretched to both sides, and the skin contacting the concave part 42 is squeezed, so as to achieve a massage effect of lifting and tightening the skin.

[0051] In actual situations, if Figure 2 As shown in (b), three convex parts 41 may be provided, and there are two corresponding concave parts 42. Only when at least two convex parts 41 are provided, a concave part 42 can be formed between two convex parts 41, and when the two convex parts 41 are in contact with the skin, the skin on both sides can be squeezed and pulled toward the middle, so that the skin at the position of the concave part 42 can also be tightened.

[0052] In another embodiment, the abutment section 411 and the lifting section 412 may have a clear dividing line. In this case, the cross-sectional outer contour shape of the abutment section 411 may be an arc convex outwardly, an execution shape parallel to the axis, or other shapes, and its main function is to roll on the skin surface to reduce the friction of the shaver; the cross-sectional outer contour shape of the lifting section 412 may be one or more of an inclined straight line, an outward convex arc, and an inward concave arc, and its main function is to lift the skin; the recess 42 may be directly formed by the lifting sections 412 on the opposite sides of the two connected protrusions 41, or it may be formed by the lifting sections 412 on the opposite sides of the two connected protrusions 41 and a transition section located between the two lifting sections 412, that is, the transition section is located at the bottom of the recess 42, and its cross-sectional outer contour shape may also be one or more of a horizontal straight line, an outward convex arc, an inward concave arc, and a wave.

[0053] The knife group 3 comprises a stationary knife assembly and a movable knife assembly. The stationary knife assembly comprises a stationary knife holder 31 and a stationary blade 32 fixed on the stationary knife holder 31. The movable knife assembly comprises a movable knife seat 33 and a movable blade 34 fixed on the movable knife seat 33 and movably arranged on the inner side of the stationary blade 32. The stationary knife holder 31 is movably arranged on the knife head base 21 (specifically, the stationary knife holder 31 can be moved in the height direction relative to the knife head base 21), and the movable blade 34 is movably arranged inside the stationary blade 32 and can reciprocate relative to the stationary blade 32 along its own length direction. When in use, the stationary blade 32 contacts the skin and moves along the skin driven by the user's hand, and can also float up and down along the height direction of the blade head base 21 following the stationary blade holder 31; the movable blade 34 mainly plays a cutting role, and can move up and down along the height direction inside the stationary blade 32 following the stationary blade 32, and the movable blade 34 and the stationary blade 32 almost keep in contact with each other, and the movable blade 34 can cooperate with the stationary blade 32 to cut the beard when reciprocating along its own length direction.

[0054] In this embodiment, the roller mounting end 43 of the lifting roller 4 is mounted on the static blade holder 31 and is located on one side of the static blade 32, so that the lifting roller 4 can move along the height direction with the static blade 32. Specifically, when in use, when the knife group 3 contacts the protruding parts on the skin such as the mandible and the Adam's apple, the knife group 3 moves along the height direction of the knife head base 21 relative to the knife head base 21, and the lifting roller 4 moves along the height direction of the knife head base 21 in coordination with the movement of the knife group 3. The lifting roller 4 is mounted on the knife head base 21 through the static blade holder 31, and the static blade holder 31 has a pair of guide portions 310 arranged opposite to each other in the length direction, and the pair of guide portions 310 protrude toward the same side to form a protruding portion, and roller mounting holes 311 for inserting two roller mounting ends 43 are opened on opposite sides of the pair of protruding portions, and the roller mounting ends 43 are columnar, and the two ends are inserted into the roller mounting holes 311 located on both sides during installation. That is to say, the lifting roller 4 is directly mounted on the static blade holder 31, and there is no need to set up an additional connecting structure, which simplifies the structure, saves costs, and makes the structure more compact and simple, easy to install, and is conducive to the lightweight and miniaturization of the electric shaver. A convex ring 44 protruding from the roller mounting end 43 is provided between the roller body 40 and the roller mounting end 43. The convex ring 44 can form positioning and limiting when the roller mounting end 43 cooperates with the roller mounting hole 311, and can also enhance the stability of the structural installation. In addition, the convex ring 44 is also connected to the adjacent lifting section 414 through a recess, which can further enhance the lifting massage effect.

[0055] When the knife group 3 has one, the lifting roller 4 can be installed on the front side of the knife group 3 or on the rear side of the knife group 3. Since the lifting roller 4 is installed on the static knife holder 31, the lifting roller 4 can always float with the knife group 3. When the lifting roller 4 is installed on the front side or the rear side of the knife group 3, it can be installed on the static knife holder 31 of the knife group 3 or on the cutter head base 21 located on the front side or the rear side of the knife group 3. In comparison, it is better to install it on the static knife holder 31, so that the lifting roller 4 can float together with the static knife holder 31.

[0056] When there are two knife groups 3, the two knife groups 3 are respectively a first knife group 3a located at the front side and a second knife group 3b located at the rear side, and the roller mounting end 43 can be mounted on the static knife frame 31 of the first knife group 3a or the second knife group 3b. For example, the roller mounting end 43 can be mounted on the front side of the static knife frame 31 of the first knife group 3a; the roller mounting end 43 can be mounted on the rear side of the static knife frame 31 of the first knife group 3a (i.e., the front side of the static knife frame 31 of the second knife group 3b), and can also be mounted on the rear side of the static knife frame 31 of the second knife group 3b. Figure 5 As shown, the roller mounting end 43 is installed on the front side of the stationary blade holder 31 of the second blade group 3b, the guide portion 310 of the stationary blade holder 31 of the second blade group 3b protrudes forward to open a roller mounting hole 311, and then the roller mounting end 43 is inserted into the roller mounting hole 311 to achieve installation, and the lifting roller 4 floats following the stationary blade holder 31 of the blade group 3 on which it is installed.

[0057] When the lifting roller 4 is located between the first blade group 3a and the second blade group 3b, during operation, when a protruding part is encountered on the skin, the first blade group 3a will first float along the skin, and the lifting roller 4 and the second blade group 3b will then float following the first blade group 3b. At this time, the rotation of the lifting roller 4 is not easily hindered, and a transition is formed between the first blade group 3a and the second blade group 3b, so that the blade group can move more smoothly on the skin. In addition, when the first blade group 3a on the front side contacts the skin, the lifting roller 4 also contacts the skin subsequently. The lifting roller 4 can reduce the friction between the blade group and the skin, so that the blade head device 2 of the electric shaver can move further smoothly on the skin.

[0058] Furthermore, when the lifting roller 4 is located between the first knife group 3a and the second knife group 3b, the highest point of the protrusion 41 is higher than the highest point of the stationary blade 32 of the first knife group 3a, and the lifting roller 4 is installed on the stationary knife holder 31 of the second knife group 3b. When in use, the lifting roller 4 can form a smoother connection between the first knife group 3a and the second knife group 3b.

[0059] <Knife set installation>

[0060] In this embodiment, if Figure 1As shown, there are five knife groups 3, which are distributed along the front-to-back direction of the knife head base 21, namely the first knife group 3a, the second knife group 3b, the third knife group 3c, the fourth knife group 3d and the fifth knife group 3e from front to back. The two knife groups located on the outermost sides of the five knife groups (i.e., the first knife group 3a and the fifth knife group 3e) are fine scissor groups, which can be used to trim shorter hair; the knife group located in the middle (i.e., the third knife group 3c) is a trimming knife group, which can be used to trim longer hair; the remaining two knife groups located on the second outer sides (i.e., the second knife group 3b and the fourth knife group 3d) are also fine scissor groups, which can be used to trim shorter hair. Each knife group is equipped with a stationary knife assembly and a movable knife assembly, and the movable knife assembly is arranged inside the stationary knife assembly, the stationary knife assembly has a stationary blade 32 and a guide portion 31, and the movable knife assembly has a movable knife seat 33 and a movable blade 34.

[0061] like Figure 1 As shown, a lifting roller 4 is provided between the first blade group 3a and the second blade group 3b, and between the fourth blade group 3d and the fifth blade group 3e, so that when the user uses the shaver, it can play a transition and lifting role regardless of whether the user is shaving forward (with the front side as the primary contact surface) or shaving backward (with the rear side as the primary contact surface).

[0062] like Figure 6 and Figure 7 As shown, the static tool holder 31 can be installed on the cutter head base 21 in a floating manner in the height direction, and the specific installation structure between the two is as follows: the guide portion 310 of the static tool holder 31 is located on the outer side of the cutter head base 21 and is formed with a vertically arranged guide strip 3101, and the outer side of the cutter head base 21 is correspondingly provided with a guide groove 211, and the bottom of the guide groove 211 is provided with a blocking edge 2111 for blocking the bottom end of the guide strip 3101, and the guide strip 3101 is inserted into the guide groove 211 from top to bottom, and when the guide strip 3101 is inserted into the guide groove 211 from top to bottom, When the strip 3101 moves to the lower end and abuts against the blocking edge 2111, the guide part 310 moves to the lowest position; the guide part 310 is located on the inner side of the cutter head base 21 to form a limited stopper 3102, and the inner side of the cutter head base 21 is provided with a limited stopper edge 212 corresponding to the limited stopper 3102. The limited stopper 3102 is located below the limited stopper edge 212, and the limited stopper edge 212 is used to limit the travel of the guide part 310. When the two are in contact, the guide part 310 moves to the highest position. The guide part 310 is located on the inner side of the cutter head base 21 and is further provided with a guide spring 36 between the cutter head base 21. One end of the guide spring 36 abuts against the cutter head base 21, and the other end abuts against the guide part 310, which is used to support and reset the guide part 310.

[0063] A stationary blade fixing portion 313 for fixing the stationary blade 32 is integrally formed on opposite sides of a pair of guide portions 310 (the side of the guide portion 310 facing the other guide portion 310). The stationary blade 32 is directly fixed on the stationary blade fixing portion 313 without the need for additional installation through a connecting part or an installation part. On the one hand, the structure can be simplified to facilitate lightweighting. On the other hand, the installation of the stationary blade 32 and the guide portion 310 is more compact, which facilitates the synchronous floating of the guide portion 310 and the stationary blade 32.

[0064] In the first knife group 3a and the fifth knife group 3e of this embodiment, the first knife group 3a and the fifth knife group 3e have the same structure, and their specific structures are as follows: Figure 8 As shown, the static blade fixing part 313 is an integrated structure connecting the two guide parts 310. The static blade fixing part 313 has a pair of connecting plates 3131 connecting the two guide parts 310. The outer sides of the two connecting plates 3131 are provided with a plurality of fixing heads. The static blade 32 is a curved sheet structure, and a plurality of fixing holes matching the fixing heads are provided at its edge. The static blade 32 is fixed by connecting the fixing holes and the fixing heads. The static blade fixing part 313 is located on the opposite side of the pair of guide parts 310 and has a support platform 3132 protruding from the guide part 310, which is used to support the two end edges of the static blade 32. In this embodiment, the static blade 32 adopts an installation structure directly fixed on the static blade holder 31, and no other connection structure is required. The structure is simple, and the installation and disassembly are convenient and quick, and it can be conducive to the development of miniaturization and lightweight products.

[0065] like Figure 8 and Fig. 9 As shown, the inner sides of the two connecting plates 3131 are hollowed out to form a receiving space 314 for receiving the moving knife assembly (the receiving space 314 can also be formed by hollowing out the interior of the stationary knife fixing portion 313), and the bottoms of both ends of the stationary knife fixing portion 313 are respectively formed with moving knife mounting portions 315 for mounting the moving knife seat 33, and the two moving knife mounting portions 315 are symmetrically arranged. Figure 10-13As shown, the movable knife mounting portion 315 comprises a mounting frame 316, a mounting plate 317 and a movable knife spring 35. In this embodiment, the mounting plate 317 is detachably mounted on the mounting frame 316. The movable knife spring 35 is pressed between the movable knife seat 33 and the mounting plate 317 to support the movable knife seat 33 and enable the movable blade 34 on the movable knife seat 33 to always move close to the stationary blade 32. At the same time, the elastic coefficient of the guide spring 36 is smaller than the elastic coefficient of the movable knife spring 35, so that the movable blade 34 on the movable knife seat 33 can always be close to the stationary blade 32, thereby improving the shearing effect. The mounting structure of the movable knife spring 35 is as follows: an upper spring seat 331 for mounting the upper end of the movable knife spring 35 is provided on the side of the movable knife seat 33 facing the mounting plate 317, and a lower spring seat 3171 for mounting the lower end of the movable knife spring 35 is provided on the mounting plate 317. The upper and lower ends of the movable knife spring 35 are respectively sleeved on the upper spring seat 331 and the lower spring seat 3171.

[0066] Since the mounting frame 316 and the mounting plate 317 of the present embodiment are detachable mounting structures, when installing the stationary knife assembly and the moving knife assembly, first fix the stationary knife blade 32 and the moving knife blade 34 on the stationary knife fixing portion 313 and the top of the moving knife seat 33 respectively, then insert the upper end of the moving knife spring 35 into the upper spring seat 331, and then install the moving knife seat 33 with the moving knife blade 34 and the moving knife spring 35 from bottom to top along the mounting frame 316 into the accommodating space 314, and then install the mounting plate 317 on the mounting frame 316 (at the same time, the lower end of the moving knife spring 35 is mounted on the lower spring seat 3171), and the combined installation of the stationary knife assembly and the moving knife assembly can be completed, which is very convenient and quick.

[0067] In this embodiment, the detachable structure between the mounting frame 316 and the mounting plate 317 is provided in the following three ways:

[0068] The first type: Figure 11-13As shown, the mounting frame 316 has a pair of transverse clamping edges 3161 arranged along the length direction of the accommodation space 314 and a longitudinal clamping edge 3162 arranged along the width direction of the accommodation space 314, and the longitudinal clamping edge 3162 connects the pair of transverse clamping edges 3161, and the pair of transverse clamping edges 3161 and the longitudinal clamping edge 3162 enclose a mounting area 3160 for mounting the mounting plate 317, and the mounting area 3160 is a rectangular area with one side open. An upper limit groove 31611 opening upward is formed at one end of the transverse clamping edge 3161 close to the longitudinal clamping edge 3162, and a lower limit groove 31612 opening downward is formed at one end of the transverse clamping edge 3161 away from the longitudinal clamping edge 3162, and an upper limit buckle edge 3172 and a lower limit buckle edge 3173 matching the upper limit groove 31611 and the lower limit groove 31612 are provided on the mounting plate 317. A pointed limiting tip 31613 is formed at one end of the transverse clamping edge 3161 away from the longitudinal clamping edge 3162, and a limiting notch 3174 is provided on the side of the lower limiting buckle edge 3173 on the mounting plate 317 for the limiting tip 31613 to be inserted. A limiting groove 31621 is provided on the upper surface of the longitudinal clamping edge 3162, and a limiting convex edge 3175 is provided on the mounting plate 317 to cooperate with the limiting groove 31621, that is, the limiting convex edge 3175 is buckled on the upper part of the limiting groove 31621. In order to facilitate the insertion of the mounting plate 317, the outer sides of the upper limiting buckle edge 3172 and the limiting convex edge 3175 can be set to an arc or inclined surface, so that they have a guiding function, making it easier to insert the mounting plate 317. When installing this type of installation structure, the installation plate 317 can be inserted into the opening side of the installation area 3160 at an angle, and when disassembling, it only needs to press down slightly on the lower limit buckle edge 3173 to remove it, which makes disassembly and assembly very convenient.

[0069] The second type: is basically the same as the first type mentioned above, except that a limiting groove is provided on the lower surface of the longitudinal clamping edge 3162, and a limiting convex edge cooperating with the limiting groove is provided on the mounting plate 317. The protruding direction of the limiting convex edge is opposite to that of the first type mentioned above, and needs to be buckled in the lower part of the limiting groove.

[0070] The third type: the installation frame 316 has a pair of transverse card edges arranged along the length direction of the accommodating space 314 and a pair of longitudinal card edges arranged along the width direction of the accommodating space 314, and the pair of longitudinal card edges are respectively connected to the two ends of the pair of transverse card edges, and the pair of transverse card edges and the pair of longitudinal card edges are enclosed to form an installation area for installing the installation plate 317, and the installation area is a rectangular area with four sides closed. The longitudinal card edge and the transverse card edge are both provided with a downwardly concave limit card groove, and the installation plate is a rectangular plate, and the installation plate is provided with a limit convex edge that cooperates with the limit card groove. When installing, the rectangular plate can be directly buckled into the installation area from bottom to top. In order to facilitate the buckling of the installation plate 317, the outer side of the limit convex edge around can be set to an arc or an inclined surface, so that it has a guiding function, making it easier to insert the installation plate. Compared with the above two methods, although this method is simple in structure, it is slightly more difficult to disassemble after installation, and it is not easy to remove the installation plate.

[0071] In the second knife group 3b and the fourth knife group 3d of this embodiment, the second knife group 3b and the fourth knife group 3d have the same structure, and their specific structures are as follows: Figure 14-15 As shown, the static blade fixing part 313 is an integrated structure connecting the two guide parts 310. The static blade fixing part 313 has a pair of connecting plates 3131 connecting the two guide parts 310. The outer sides of the two connecting plates 3131 are provided with a plurality of fixing heads. The static blade 32 is a curved sheet structure, and a plurality of fixing holes matching the fixing heads are provided at its edge. The static blade 32 is fixed by connecting the fixing holes and the fixing heads. The static blade fixing part 313 is located on the opposite side of the pair of guide parts 310 and has a support platform 3132 protruding from the guide part 310, which is used to support the two end edges of the static blade 32. In this embodiment, the static blade 32 adopts an installation structure directly fixed on the static blade holder 31, and no other connection structure is required. The structure is simple, and the installation and disassembly are convenient and quick, and it can be conducive to the development of miniaturization and lightweight products.

[0072] The inner sides of the two connecting plates 3131 are hollowed out to form a receiving space 314 for receiving the moving knife assembly (the receiving space 314 may be formed by hollowing out the interior of the stationary knife fixing portion 313). The moving knife seat 33 is fixed to the moving blade 34 by a snap-fit ​​structure, and a supporting spring 37 is provided in the middle of the moving knife seat 33. One end of the supporting spring 37 is provided on the moving knife seat 33, and the other end is provided on the reciprocating drive device 1, so as to support the moving knife seat 33 and provide a reset force for the entire knife assembly in the height direction of the knife head base 21. It can be seen from this that although the installation structure of the second knife group 3b and the fourth knife group 3d is different from the installation structure of the first knife group 3a and the fifth knife group 3e, both structures are for enabling the moving knife assembly to move relative to the stationary knife assembly. Therefore, the two structures can be replaced according to actual needs, or all knife groups can adopt the same installation structure.

[0073] In the third knife group 3c of the present embodiment, the structure of the third knife group 3c is different from the structures of the first knife group 3a, the second knife group 3b, the fourth knife group 3d and the fifth knife group 3e. The specific structure is as follows: Fig.16 and Fig.17 As shown, the static knife assembly has two static knife holders 31 symmetrically arranged along the length direction. The two static knife holders 31 have the same structure and both have a guide portion 310. Symmetric static knife fixing portions 313 are formed on the opposite sides of the two guide portions 310. The static knife blade 32 is clamped on the static knife fixing portion 313 through a buckle structure, and the static knife blade 32 is mounted above the two static knife holders 31. The entire shape of the static knife fixing portion 313 is V-shaped. Buckle structures 3133 for clamping the static knife blade 32 are provided at both ends of the upper part of the V-shaped. The bottom of the V-shaped The movable knife mounting part 315 is formed by a flat arrangement, and the movable knife mounting part 315 has a lower spring mounting seat 3151. The two ends of the movable knife seat 33 are provided with an upper spring mounting seat 333 at the lowest part of the bottom of the movable knife mounting part 315. The upper and lower ends of the movable knife spring 38 are respectively sleeved on the upper spring mounting seat 333 and the lower spring mounting seat 3151 to form a support for the movable knife seat 33. Therefore, the movable knife seat 33 is installed above the movable knife mounting part 315 through the movable knife spring 38, and the movable blade 34 is fixed on the movable knife seat 33 through a buckle structure. When installing this structure, it is necessary to first install the movable knife assembly on the static knife holder 31, and then install the static blade 32 on the outer side of the movable blade 34. It can be seen from this that the installation structure of the third knife group 3c is different from the installation structures of the other knife groups mentioned above, but these three knife group structures are all for allowing the movable knife assembly to move relative to the static knife assembly. Therefore, these three structures can be replaced according to actual needs, or all knife groups adopt the same installation structure.

[0074] like Fig.18 As described above, the driving module of the reciprocating driving device 1 has a driving body installed inside the driving housing 11, and the driving body contains at least one driving member 12 exposed outside the driving housing 11, and the driving member 12 is used to connect to the corresponding moving tool seat 33. In the present embodiment, since there are five knife groups, each knife group contains a moving tool seat 33, and the five moving tool seats are respectively the first moving tool seat 33a, the second moving tool seat 33b, the third moving tool seat 33c, the fourth moving tool seat 33d and the fifth moving tool seat 33e, and the driving members 12 also have five corresponding to the five moving tool seats, namely the first driving member 12a, the second driving member 12b, the third driving member 12c, the fourth driving member 12d and the fifth driving member 12e. Among them, the first driving member 12a and the fifth driving member 12e have the same structure, which is a vertically arranged rod-shaped structure; the first moving tool seat 33a and the fifth moving tool seat 33e have the same structure, and are the same as the following. Fig.10The structure of the movable knife seat 33 shown is the same, and a socket 334 is provided in the middle for the first driving member 12a / fifth driving member 12e to be inserted. The second driving member 12b and the fourth driving member 12d have the same structure, which are a pair of rod-shaped structures separated by a certain distance, and a supporting spring 37 is provided between the pair of rod-shaped structures; the second movable knife seat 33b has the same structure as the fourth movable knife seat 33d, and is the same as the structure shown in FIG. Figure 14-15 The structure of the movable knife seat 33 shown in FIG. 1 is the same as that of the movable knife seat 33 shown in FIG. 1 , and a pair of sockets 335 are provided in the middle for inserting the second driving member 12b / the fourth driving member 12d. The third driving member 12c is a vertically arranged rod-shaped structure. The third movable knife seat 33c is similar to the movable knife seat 33 shown in FIG. 1 . Fig.17 The structure of the movable blade holder 33 is the same, and a socket 336 is provided in the middle for the third driving member 12c to be inserted. The driving body drives the corresponding movable blade holder 33 to reciprocate through the driving member 12, so that the movable blade assembly and the stationary blade assembly cooperate to shave.

[0075] Embodiment 2:

[0076] The difference between this embodiment and the above-mentioned embodiment 1 is that Fig.19 and Fig. 20 As shown, the lifting roller 4 is installed between the two knife groups 3 through the lifting wheel seat 44. The lifting wheel seat 44 has an integrally formed guide mounting portion 441 and a roller mounting portion 442. The guide mounting portion 441 is in a transversely arranged long strip shape, and is used to connect with the static knife holder 31 of the first knife group 3a and the second knife group 3b. The roller mounting portion 442 is located above the middle of the guide mounting portion 441, and is used to connect with the roller mounting end 43. Specifically, the roller mounting portion 442 extends toward one side of the lifting roller 4 to form a mounting column 444 extending along the length direction, and the mounting column 444 is provided with a mounting shaft hole for the roller mounting end 43 to be inserted along the axial direction. The separate lifting wheel seat 44 is provided, on the one hand, to facilitate the installation of the lifting roller 4, and on the other hand, because the guide mounting portion 441 of the lifting wheel seat 44 is simultaneously connected to the static knife holders 31 of the two knife groups, the linkage between the two knife groups can be ensured during operation, so that the skin can transition more smoothly between the two knife groups, greatly improving the shaving comfort.

[0077] The installation structure of the guide installation part 441 and the two stationary tool holders 31 has the following three modes:

[0078] The first type: Fig. 20As shown, the static blade holders of the first blade group 3a and the second blade group 3b are respectively the first static blade holder 31a and the second static blade holder 31b, and the first static blade holder 31a and the second static blade holder 31b are provided with respective connecting heads 312 on the side away from the static blade 32, and the guide mounting portion 441 is provided with a pair of mounting holes 443 corresponding to the connecting heads 312; the edges of the two mounting holes 443 are both provided with an inwardly recessed abutment platform 4431, the connecting head 312 has a straight opening 3123 and an abutment boss 3121 for abutting against the abutment platform 4431, and one side of the abutment boss 3121 has an inclined guide surface 3122. The inclined guide surface 3122 can also be in an arc shape, so as to facilitate the guiding mounting portion 441 to be inserted into the connecting head 312 along the position.

[0079] The second type: Similar to the first type mentioned above, the first stationary tool holder 31a and the second stationary tool holder 31b are provided with respective connecting heads on the side away from the stationary blade 32, and the connecting heads are cylindrical. The corresponding connecting heads on the guide mounting portion 441 are provided with a pair of mounting holes, and can be extended into the mounting holes, and then a fixing pin (or screw, etc.) is inserted into the connecting head from the mounting hole to fix the stationary tool holder 31 and the guide mounting portion 441 together.

[0080] The third type: a connecting hole is provided on the first stationary tool holder 31a and the second stationary tool holder 31b on the side away from the stationary blade 32, and a mounting hole is provided on the guide mounting part 441 corresponding to the connecting hole. A fixing pin (or screw, etc.) is passed through the mounting hole and inserted into the connecting hole to fix the stationary tool holder 31 and the guide mounting part 441 together.

[0081] Embodiment 3:

[0082] The difference between this embodiment and the above-mentioned embodiments 1 and 2 lies in the specific shape of the convex portion 41 on the lifting roller 4. In this embodiment, Fig.21 As shown, the convex part 41 includes a plurality of flanges 411 connected end to end, the outer diameters of the plurality of flanges 411 gradually decrease from the flange located in the middle to both sides, and two adjacent flanges 411 are transitionally connected through concave edges 412. This shape allows each convex part 41 to be divided into a plurality of independent convex and concave parts, the squeezing unit becomes smaller, and the skin is pressed in multiple dimensions, which can provide a more delicate lifting and massage for the skin.

[0083] The technical effects of the above embodiments are as follows:

[0084] In the cutter head device proposed in the above embodiment, since a lifting roller is additionally provided, and the lifting roller contains at least two convex parts, and two adjacent convex parts are connected by a concave part, when the user uses the shaver, when the cutter head rolls along the facial contour, the lifting roller will also contact the face and roll on the skin, reducing the friction resistance of the cutter group during the rolling process. After the convex part of the lifting roller contacts the skin, it will press and stretch the skin, and the skin in the concave part between the two adjacent convex parts will also have an arched, squeezed and tightened effect. The stretched skin will be easier to unfold the beard, making it easier for the cutter group to cut the beard, improving the cleanness of the beard and reducing the risk of allergies. At the same time, the skin can also be anti-wrinkle and firm after being stretched.

[0085] Furthermore, the lifting roller is installed between two adjacent knife groups using a lifting wheel seat. The lifting wheel seat connects the two knife groups so that the floating between the knife groups can be linked. The lifting roller is always in the center position of the two knife groups, allowing the knife groups to shave the face more smoothly, with better shaving effects, thereby enhancing user experience and comfort.

[0086] The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention. For example, in the above embodiments, the stationary blade 32 is directly fixed on the stationary blade holder 31. In actual situations, the stationary blade 32 can also be installed on the stationary blade holder 31 through a connecting piece to facilitate the replacement of the stationary blade 32.

Claims

1. An electric shaver, characterized in that: include: A reciprocating drive device (1) having a drive housing (11), The cutter head device (2) is mounted on the reciprocating drive device (1), works under the drive of the reciprocating drive device (1), and has: The cutter head base (21) is detachably mounted on the drive housing (11). at least one blade assembly (3) movably arranged on the blade head base (21), and A lifting roller (4) is installed on the knife group (3) or between two knife groups (3). The lifting roller (4) comprises at least two protrusions (41) distributed along the axial direction, and a concave portion (42) is formed between two adjacent protrusions (41). When the lifting roller (4) rolls on the skin, the skin is lifted, tightened and stretched under the action of the protrusions (41) and the concave portions (42).

2. The electric shaver according to claim 1, characterized in that: Each of the protrusions (41) has at least one abutting section (413) located in the middle and lifting sections (414) located on both sides of the abutting section (413), and the outer diameter of the lifting section (414) decreases as the distance from the abutting section (413) increases. The recessed portion (42) is formed between the two lifting sections (414) on opposite sides of two adjacent protruding portions (41).

3. The electric shaver according to claim 2, characterized in that: The lifting roller (4) comprises: The roller body (40) is provided with the convex part (41) and the concave part (42) distributed along the axial direction. The roller mounting end (43) is located at the end of the roller body (40) and is used to mount the roller body (40) on the knife group (3) or between two knife groups (3).

4. The electric shaver according to claim 2 or 3, characterized in that: The convex portion (41) is a shuttle-shaped rotating body structure whose outer diameter gradually decreases from the middle to both sides; or, the convex portion (41) includes a plurality of flanges (411), the outer diameters of the plurality of flanges (411) gradually decrease from the flange (411) located in the middle to both sides, and two adjacent flanges (411) are transitionally connected via a concave edge (412).

5. The electric shaver according to claim 2 or 3, characterized in that: The knife group (3) comprises: A stationary blade assembly comprises a stationary blade holder (31) and a stationary blade (32) arranged on the stationary blade holder (31). A movable knife assembly comprising a movable knife seat (33) and a movable blade (34) fixed on the movable knife seat (33); The static tool holder (31) is movably arranged on the tool head base (21). The movable blade (34) is movably arranged inside the stationary blade (32).

6. The electric shaver according to claim 5, characterized in that: The roller mounting end (43) is mounted on the static blade holder (31) and is located on one side of the static blade (32); the static blade holder (31) protrudes toward one side and is provided with a roller mounting hole (311) for inserting the roller mounting end (43); Alternatively, the knife group (3) has two, namely a first knife group (3a) and a second knife group (3b), and the roller mounting end (43) is installed between the stationary knife holder (31) of the first knife group (3a) and the second knife group (3b) via a lifting wheel seat (44).

7. The electric shaver according to claim 6, characterized in that: The lifting wheel seat (44) has: The guide installation part (441) is connected to the static knife holder (31) of the first knife group (3a) and the second knife group (3b), The roller mounting portion (442) is connected to the roller mounting end (43).

8. The electric shaver according to claim 7, characterized in that: A connecting head (312) is provided on the side of the stationary blade holder (31) away from the stationary blade (32), and a mounting hole (443) is provided on the guide mounting portion (441) corresponding to the connecting head (312); The roller mounting portion (442) extends toward one side of the pulling roller (4) to form a mounting column (444), and the mounting column (444) is provided with a mounting shaft hole (445) along the axial direction for the roller mounting end (43) to be inserted.

9. The electric shaver according to claim 8, characterized in that: The edge of the mounting hole (443) is provided with an inwardly recessed abutment platform (4431), the connector (312) has a straight-line opening and an abutment boss (3121) for abutting against the abutment platform (4431), and one side of the abutment boss (3121) has an inclined guide surface (3122); Alternatively, the connecting head (312) is cylindrical and extends into the mounting hole, and a fixing pin is inserted into the connecting head (312) to fix the stationary tool holder (31) and the guide mounting portion (441) together.

10. The electric shaver according to claim 5, characterized in that: The reciprocating drive device (1) also has a drive body, which is installed in the drive housing and contains at least one drive member for connecting to the corresponding movable knife seat (33). The drive body (5) drives the movable knife seat (33) to reciprocate through the drive member (60).

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